https://www.selleckchem.com/pr....oducts/gsk2982772.ht
The findings were adjusted for the significant influencing factor size of pre-operative radiolucency (p 0.05). Of the 109 teeth that were initially accessed through existing crowns, 9 (8%) displayed porcelain fracture or crown de-cementation. Performing root canal treatment through an existing full coverage restoration did not compromise periapical healing and was associated with a low incidence of associated complications. Crown removal before NSRCT is not mandatory for periapical healing but requires a judicious pre-assessment